Question

cities and cities require large amounts of energy to meet citizens needs. this energy is used for items like traffic lights, street lights and automatic bridges, which keep people safe and allow traffic to flow smoothly. the city leaders of westphalen need to choose ways to reduce the citys energy use without reducing citizen safety. select the idea that will reduce energy usage the most and have the least effect on citizen safety. a traffic lights will be replaced by traffic cops at every intersection. b street lights will only work on weekdays and be turned off on weekends. c over time, replace old street lights and traffic lights with solar - powered lights. d replace all traffic lights with stop signs, creating four - way stops at all intersections.

Explanation:

The goal is to reduce energy use without reducing citizen safety. Option A (replacing traffic lights with traffic cops) would likely reduce safety. Option B (traffic lights working only on weekdays) could increase safety risks on weekends. Option D (replacing traffic lights with stop signs) would likely disrupt traffic flow and safety. Option C (replacing old lights with solar - powered ones) reduces energy use (as solar is renewable and efficient) and maintains safety since the lights are still there, just more energy - efficient.

Answer:

C. Over time, replace old street lights and traffic lights with solar - powered lights.